2111211220004 has 12 divisors (see below), whose sum is σ = 3699660048924. Its totient is φ = 1054165491744.

The previous prime is 2111211219989. The next prime is 2111211220081. The reversal of 2111211220004 is 4000221121112.

It can be written as a sum of positive squares in 2 ways, for example, as 1983477889600 + 127733330404 = 1408360^2 + 357398^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360026267 + ... + 360032130.

It is an arithmetic number, because the mean of its divisors is an integer number (308305004077).

Almost surely, 2^{2111211220004} is an apocalyptic number.

It is an amenable number.

2111211220004 is a deficient number, since it is larger than the sum of its proper divisors (1588448828920).

2111211220004 is a wasteful number, since it uses less digits than its factorization.

2111211220004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720059134 (or 720059132 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2111211220004 its reverse (4000221121112), we get a palindrome (6111432341116).

The spelling of 2111211220004 in words is "two trillion, one hundred eleven billion, two hundred eleven million, two hundred twenty thousand, four".